feat(localtsmdb): export ILocalTsmDbConnectionInfo and expand LocalTsmDb/TsmDB documentation and examples

changelog.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## 2026-02-03 - 5.1.0 - feat(localtsmdb)
+export ILocalTsmDbConnectionInfo and expand LocalTsmDb/TsmDB documentation and examples
+
+- Exported new type ILocalTsmDbConnectionInfo from ts_local (ts/index.ts)
+- Added LocalTsmDb configuration example, methods table, and ConnectionInfo interface to README
+- Documented Unix socket vs TCP connection modes and updated usage examples (TCP and socket examples)
+- Expanded TsmDB docs: additional server properties, aggregation stages, regex examples, index operations, database ops, checksums, and wire protocol commands
+- Updated architecture notes to include Unix socket support and new engine components (QueryEngine, UpdateEngine, AggregationEngine)
+
 ## 2026-02-03 - 5.0.0 - BREAKING CHANGE(localtsmdb)
 add Unix socket support and change LocalTsmDb API to return connection info instead of a MongoClient
 

readme.md

@@ -24,13 +24,14 @@ For reporting bugs, issues, or security vulnerabilities, please visit [community
 | **Speed** | ~2-5s startup | ⚡ Instant (~5ms) | ⚡ Instant (Unix socket) |
 | **Compatibility** | 100% MongoDB | MongoDB driver compatible | MongoDB driver compatible |
 | **Dependencies** | Downloads MongoDB binary | Zero external deps | Zero external deps (no MongoDB driver!) |
+| **Connection** | TCP | TCP or Unix socket | Unix socket (default) |
 | **Replication** | ✅ Full replica set | Single node | Single node |
 | **Persistence** | Dump to directory | Memory or file | File-based (automatic) |
 | **Use Case** | Integration testing | Unit testing, CI/CD | Quick prototyping, local dev |
 
 ## 🚀 Quick Start
 
-### Option 1: LocalTsmDb (Zero-Config Local Database) ⭐ NEW
+### Option 1: LocalTsmDb (Zero-Config Local Database) ⭐
 
 The easiest way to get started — just point it at a folder and you have a persistent MongoDB-compatible database using Unix sockets. No port conflicts, no MongoDB driver dependency in LocalTsmDb!
 
@@ -76,7 +77,7 @@ A lightweight, pure TypeScript MongoDB-compatible server — use the official `m
 import { tsmdb } from '@push.rocks/smartmongo';
 import { MongoClient } from 'mongodb';
 
-// Start TsmDB server
+// Start TsmDB server (TCP mode)
 const server = new tsmdb.TsmdbServer({ port: 27017 });
 await server.start();
 
@@ -117,20 +118,55 @@ console.log(descriptor.mongoDbUrl); // mongodb://127.0.0.1:xxxxx/...
 await mongo.stop();
 ```
 
+---
+
 ## 📖 LocalTsmDb API
 
 The simplest option for local development and prototyping — lightweight, Unix socket-based, and automatic persistence.
 
+### Configuration
+
+```typescript
+import { LocalTsmDb } from '@push.rocks/smartmongo';
+import type { ILocalTsmDbOptions, ILocalTsmDbConnectionInfo } from '@push.rocks/smartmongo';
+
+const options: ILocalTsmDbOptions = {
+  folderPath: './data',           // Required: where to store data
+  socketPath: '/tmp/my.sock',     // Optional: custom socket path (default: auto-generated)
+};
+
+const db = new LocalTsmDb(options);
+```
+
+### Methods
+
+| Method | Returns | Description |
+|--------|---------|-------------|
+| `start()` | `Promise<ILocalTsmDbConnectionInfo>` | Starts the server and returns connection info |
+| `stop()` | `Promise<void>` | Stops the server and cleans up the socket |
+| `getConnectionInfo()` | `ILocalTsmDbConnectionInfo` | Returns current connection info |
+| `getConnectionUri()` | `string` | Returns the MongoDB connection URI |
+| `getServer()` | `TsmdbServer` | Returns the underlying TsmDB server instance |
+| `running` | `boolean` | Property indicating if the server is running |
+
+### Connection Info
+
+The `start()` method returns an `ILocalTsmDbConnectionInfo` object:
+
+```typescript
+interface ILocalTsmDbConnectionInfo {
+  socketPath: string;      // The Unix socket file path, e.g., /tmp/smartmongo-abc123.sock
+  connectionUri: string;   // MongoDB URI, e.g., mongodb://%2Ftmp%2Fsmartmongo-abc123.sock
+}
+```
+
 ### Basic Usage
 
 ```typescript
 import { LocalTsmDb } from '@push.rocks/smartmongo';
 import { MongoClient } from 'mongodb';
 
-const db = new LocalTsmDb({
+const db = new LocalTsmDb({ folderPath: './data' });
-  folderPath: './data',    // Required: where to store data
-  socketPath: '/tmp/my.sock', // Optional: custom socket path (default: auto-generated)
-});
 
 // Start and get connection info
 const { socketPath, connectionUri } = await db.start();
@@ -145,10 +181,6 @@ await client.connect();
 const users = client.db('mydb').collection('users');
 await users.insertOne({ name: 'Alice' });
 
-// Access the underlying server if needed
-const server = db.getServer();
-const uri = db.getConnectionUri();
-
 // Check status
 console.log(db.running); // true
 
@@ -165,8 +197,12 @@ await db.stop();
 - 🎯 **Zero Config** — Just specify a folder path and you're good to go
 - 🔗 **Connection URI** — Ready-to-use URI for your own MongoClient
 
+---
+
 ## 📖 SmartMongo API
 
+Full MongoDB replica set in memory using `mongodb-memory-server`.
+
 ### Creating an Instance
 
 ```typescript
@@ -202,13 +238,18 @@ await mongo.stopAndDumpToDir('./test-data');
 await mongo.stopAndDumpToDir('./test-data', (doc) => `${doc.collection}-${doc._id}.bson`);
 ```
 
+---
+
 ## 🔧 TsmDB API
 
+Pure TypeScript MongoDB wire protocol server. No external dependencies.
+
 ### Server Configuration
 
 ```typescript
 import { tsmdb } from '@push.rocks/smartmongo';
 
+// TCP mode (default)
 const server = new tsmdb.TsmdbServer({
   port: 27017,             // Default MongoDB port
   host: '127.0.0.1',       // Bind address
@@ -216,13 +257,25 @@ const server = new tsmdb.TsmdbServer({
   storagePath: './data',   // For file-based storage
 });
 
+// Unix socket mode (no port conflicts!)
+const server = new tsmdb.TsmdbServer({
+  socketPath: '/tmp/my-tsmdb.sock',
+  storage: 'file',
+  storagePath: './data',
+});
+
 await server.start();
-console.log(server.getConnectionUri()); // mongodb://127.0.0.1:27017
+console.log(server.getConnectionUri());
+// TCP: mongodb://127.0.0.1:27017
+// Socket: mongodb://%2Ftmp%2Fmy-tsmdb.sock
 
 // Server properties
 console.log(server.running);              // true
-console.log(server.getUptime());          // seconds
+console.log(server.port);                 // 27017 (TCP mode)
-console.log(server.getConnectionCount()); // active connections
+console.log(server.host);                 // '127.0.0.1' (TCP mode)
+console.log(server.socketPath);           // '/tmp/my-tsmdb.sock' (socket mode)
+console.log(server.getUptime());          // seconds since start
+console.log(server.getConnectionCount()); // active client connections
 
 await server.stop();
 ```
@@ -232,6 +285,7 @@ await server.stop();
 TsmDB supports the core MongoDB operations via the wire protocol:
 
 #### 🔹 CRUD Operations
+
 ```typescript
 // Insert
 await collection.insertOne({ name: 'Bob' });
@@ -261,6 +315,7 @@ const result = await collection.findOneAndUpdate(
 ```
 
 #### 🔹 Query Operators
+
 ```typescript
 // Comparison
 { age: { $eq: 25 } }
@@ -283,9 +338,14 @@ const result = await collection.findOneAndUpdate(
 { tags: { $all: ['mongodb', 'database'] } }
 { scores: { $elemMatch: { $gte: 80, $lt: 90 } } }
 { tags: { $size: 3 } }
+
+// Regex
+{ name: { $regex: /^Al/i } }
+{ email: { $regex: '@example\\.com$' } }
 ```
 
 #### 🔹 Update Operators
+
 ```typescript
 { $set: { name: 'New Name' } }
 { $unset: { tempField: '' } }
@@ -298,9 +358,12 @@ const result = await collection.findOneAndUpdate(
 { $addToSet: { tags: 'unique-tag' } }
 { $pop: { queue: 1 } }  // Remove last
 { $pop: { queue: -1 } } // Remove first
+{ $rename: { oldField: 'newField' } }
+{ $currentDate: { lastModified: true } }
 ```
 
 #### 🔹 Aggregation Pipeline
+
 ```typescript
 const results = await collection.aggregate([
   { $match: { status: 'active' } },
@@ -311,17 +374,28 @@ const results = await collection.aggregate([
 ]).toArray();
 ```
 
-Supported stages: `$match`, `$project`, `$group`, `$sort`, `$limit`, `$skip`, `$unwind`, `$lookup`, `$addFields`, `$count`, `$facet`, and more.
+**Supported stages:** `$match`, `$project`, `$group`, `$sort`, `$limit`, `$skip`, `$unwind`, `$lookup`, `$addFields`, `$count`, `$facet`, `$replaceRoot`, `$set`, `$unset`, and more.
+
+**Supported group accumulators:** `$sum`, `$avg`, `$min`, `$max`, `$first`, `$last`, `$push`, `$addToSet`, `$count`.
 
 #### 🔹 Index Operations
+
 ```typescript
+// Create indexes
 await collection.createIndex({ email: 1 }, { unique: true });
 await collection.createIndex({ name: 1, age: -1 });
+await collection.createIndex({ location: '2dsphere' }); // Geospatial
+
+// List indexes
 const indexes = await collection.listIndexes().toArray();
+
+// Drop indexes
 await collection.dropIndex('email_1');
+await collection.dropIndexes(); // Drop all except _id
 ```
 
 #### 🔹 Database Operations
+
 ```typescript
 // List databases
 const dbs = await client.db().admin().listDatabases();
@@ -335,9 +409,13 @@ await db.dropCollection('oldcollection');
 
 // Drop database
 await db.dropDatabase();
+
+// Database stats
+const stats = await db.stats();
 ```
 
 #### 🔹 Count & Distinct
+
 ```typescript
 // Count documents
 const total = await collection.countDocuments({});
@@ -350,6 +428,7 @@ const activeDepts = await collection.distinct('department', { status: 'active' }
 ```
 
 #### 🔹 Bulk Operations
+
 ```typescript
 const result = await collection.bulkWrite([
   { insertOne: { document: { name: 'Bulk1' } } },
@@ -378,22 +457,22 @@ const server = new tsmdb.TsmdbServer({
   persistIntervalMs: 30000  // Save every 30 seconds
 });
 
-// File-based - persistent storage with optional checksums
+// File-based - persistent storage with checksums
-import { tsmdb } from '@push.rocks/smartmongo';
-
 const server = new tsmdb.TsmdbServer({
   storage: 'file',
   storagePath: './data/tsmdb'
 });
 ```
 
+---
+
 ## ⚡ Performance & Reliability Features
 
 TsmDB includes enterprise-grade features for robustness:
 
 ### 🔍 Index-Accelerated Queries
 
-Indexes are automatically used to accelerate queries. Instead of scanning all documents, TsmDB uses:
+Indexes are automatically used to accelerate queries:
 
 - **Hash indexes** for equality queries (`$eq`, `$in`)
 - **B-tree indexes** for range queries (`$gt`, `$gte`, `$lt`, `$lte`)
@@ -483,22 +562,26 @@ import { tsmdb } from '@push.rocks/smartmongo';
 
 // Checksums are used internally for WAL and data integrity
 // Documents are checksummed on write, verified on read
+const checksum = tsmdb.calculateDocumentChecksum(doc);
+const isValid = tsmdb.verifyChecksum(docWithChecksum);
 ```
 
 ### 📋 Supported Wire Protocol Commands
 
 | Category | Commands |
 |----------|----------|
-| **Handshake** | `hello`, `isMaster` |
+| **Handshake** | `hello`, `isMaster`, `ismaster` |
 | **CRUD** | `find`, `insert`, `update`, `delete`, `findAndModify`, `getMore`, `killCursors` |
 | **Aggregation** | `aggregate`, `count`, `distinct` |
 | **Indexes** | `createIndexes`, `dropIndexes`, `listIndexes` |
 | **Transactions** | `startTransaction`, `commitTransaction`, `abortTransaction` |
-| **Sessions** | `startSession`, `endSessions` |
+| **Sessions** | `startSession`, `endSessions`, `refreshSessions` |
-| **Admin** | `ping`, `listDatabases`, `listCollections`, `drop`, `dropDatabase`, `create`, `serverStatus`, `buildInfo`, `dbStats`, `collStats` |
+| **Admin** | `ping`, `listDatabases`, `listCollections`, `drop`, `dropDatabase`, `create`, `serverStatus`, `buildInfo`, `dbStats`, `collStats`, `connectionStatus` |
 
 TsmDB supports MongoDB wire protocol versions 0-21, compatible with MongoDB 3.6 through 7.0 drivers.
 
+---
+
 ## 🧪 Testing Examples
 
 ### Jest/Mocha with LocalTsmDb
@@ -620,6 +703,8 @@ tap.test('teardown', async () => {
 export default tap.start();
 ```
 
+---
+
 ## 🏗️ Architecture
 
 ### Module Structure
@@ -638,7 +723,7 @@ export default tap.start();
 │                   Official MongoDB Driver                    │
 │                      (mongodb npm)                          │
 └─────────────────────────┬───────────────────────────────────┘
-                          │ TCP + OP_MSG/BSON
+                          │ TCP/Unix Socket + OP_MSG/BSON
                           ▼
 ┌─────────────────────────────────────────────────────────────┐
 │                      TsmdbServer                            │
@@ -677,11 +762,16 @@ export default tap.start();
 | **WireProtocol** | Parses MongoDB OP_MSG binary protocol |
 | **CommandRouter** | Routes commands to appropriate handlers |
 | **QueryPlanner** | Analyzes queries and selects execution strategy |
+| **QueryEngine** | Executes queries with filter matching |
+| **UpdateEngine** | Processes update operators (`$set`, `$inc`, etc.) |
+| **AggregationEngine** | Executes aggregation pipelines |
 | **IndexEngine** | Manages B-tree and hash indexes |
 | **SessionEngine** | Tracks client sessions and timeouts |
 | **TransactionEngine** | Handles ACID transaction semantics |
 | **WAL** | Write-ahead logging for durability |
 
+---
+
 ## License and Legal Information
 
 This repository contains open-source code licensed under the MIT License. A copy of the license can be found in the [LICENSE](./LICENSE) file.

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartmongo',
-  version: '5.0.0',
+  version: '5.1.0',
   description: 'A module for creating and managing a local MongoDB instance for testing purposes.'
 }

ts/index.ts

@@ -8,7 +8,7 @@ export * as tsmdb from './ts_tsmdb/index.js';
 
 // Export LocalTsmDb from ts_local
 export { LocalTsmDb } from './ts_local/index.js';
-export type { ILocalTsmDbOptions } from './ts_local/index.js';
+export type { ILocalTsmDbOptions, ILocalTsmDbConnectionInfo } from './ts_local/index.js';
 
 // Export commitinfo
 export { commitinfo };